From 9f07d73e4598c7746218bc6b64cf2f88908645e9 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brecht@blender.org>
Date: Sun, 24 Oct 2021 14:19:19 +0200
Subject: Cycles: changes to source code folders structure

* Split render/ into scene/ and session/. The scene/ folder now contains the
  scene and its nodes. The session/ folder contains the render session and
  associated data structures like drivers and render buffers.
* Move top level kernel headers into new folders kernel/camera/, kernel/film/,
  kernel/light/, kernel/sample/, kernel/util/
* Move integrator related kernel headers into kernel/integrator/
* Move OSL shaders from kernel/shaders/ to kernel/osl/shaders/

For patches and branches, git merge and rebase should be able to detect the
renames and move over code to the right file.
---
 .../kernel/osl/shaders/node_gradient_texture.osl   | 77 ++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 intern/cycles/kernel/osl/shaders/node_gradient_texture.osl

(limited to 'intern/cycles/kernel/osl/shaders/node_gradient_texture.osl')

diff --git a/intern/cycles/kernel/osl/shaders/node_gradient_texture.osl b/intern/cycles/kernel/osl/shaders/node_gradient_texture.osl
new file mode 100644
index 00000000000..c7faee0d022
--- /dev/null
+++ b/intern/cycles/kernel/osl/shaders/node_gradient_texture.osl
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2011-2013 Blender Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "stdcycles.h"
+
+/* Gradient */
+
+float gradient(point p, string type)
+{
+  float x, y, z;
+
+  x = p[0];
+  y = p[1];
+  z = p[2];
+
+  float result = 0.0;
+
+  if (type == "linear") {
+    result = x;
+  }
+  else if (type == "quadratic") {
+    float r = max(x, 0.0);
+    result = r * r;
+  }
+  else if (type == "easing") {
+    float r = min(max(x, 0.0), 1.0);
+    float t = r * r;
+
+    result = (3.0 * t - 2.0 * t * r);
+  }
+  else if (type == "diagonal") {
+    result = (x + y) * 0.5;
+  }
+  else if (type == "radial") {
+    result = atan2(y, x) / M_2PI + 0.5;
+  }
+  else {
+    float r = max(1.0 - sqrt(x * x + y * y + z * z), 0.0);
+
+    if (type == "quadratic_sphere")
+      result = r * r;
+    else if (type == "spherical")
+      result = r;
+  }
+
+  return clamp(result, 0.0, 1.0);
+}
+
+shader node_gradient_texture(
+    int use_mapping = 0,
+    matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
+    string gradient_type = "linear",
+    point Vector = P,
+    output float Fac = 0.0,
+    output color Color = 0.0)
+{
+  point p = Vector;
+
+  if (use_mapping)
+    p = transform(mapping, p);
+
+  Fac = gradient(p, gradient_type);
+  Color = color(Fac, Fac, Fac);
+}
-- 
cgit v1.2.3